3655162681 has 4 divisors (see below), whose sum is σ = 3656513664. Its totient is φ = 3653811700.

The previous prime is 3655162619. The next prime is 3655162699. The reversal of 3655162681 is 1862615563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3655162681 is a prime.

It is a super-2 number, since 2×3655162681² = 26720428449150215522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3655162081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671425 + ... + 676846.

It is an arithmetic number, because the mean of its divisors is an integer number (914128416).

Almost surely, 2^3655162681 is an apocalyptic number.

It is an amenable number.

3655162681 is a deficient number, since it is larger than the sum of its proper divisors (1350983).

3655162681 is a wasteful number, since it uses less digits than its factorization.

3655162681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350982.

The product of its digits is 259200, while the sum is 43.

The square root of 3655162681 is about 60457.9414221159. The cubic root of 3655162681 is about 1540.4073079321.

The spelling of 3655162681 in words is "three billion, six hundred fifty-five million, one hundred sixty-two thousand, six hundred eighty-one".